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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
25/10/2004 |
Data da última atualização: |
27/10/2004 |
Autoria: |
BERED, F.; BARBOSA NETO, J. F.; ROCHA, B. M. da; CARVALHO, F. I. F. de. |
Título: |
Genetic variability in wheat (Triticum aestivum L.) germplasm revealed by RAPD markers. |
Ano de publicação: |
2002 |
Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 4, p. 499-505, Dec. 2002. |
Idioma: |
Inglês |
Conteúdo: |
The objective of this study was to assess and cluster genetic variability in wheat germplasm in order to generate useful information for crop breeders. Fifty-four wheat genotypes from different origins and eras were evaluated based on the use of RAPD markers. Once genetic variability is detected among breeding materials, appropriate crosses can be done, sppeding up breeding processe and decreasing costs. Of 100 primers screened, 20 produced scorable bands, which generated 91 bands. The average genetic similatiry value among all genotype pairs was 0.88, showing large genetic relationships in the wheat germplasm evaluated. The dendogram clustered the genotypes into mine groups and showed efficiency in identifying genetic variability. |
Palavras-Chave: |
Molecular markers; Variabilidade genética. |
Thesagro: |
Trigo; Triticum Aestivum. |
Thesaurus Nal: |
genetic similarity; polymorphism. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01433naa a2200229 a 4500 001 1212619 005 2004-10-27 008 2002 bl uuuu u00u1 u #d 100 1 $aBERED, F. 245 $aGenetic variability in wheat (Triticum aestivum L.) germplasm revealed by RAPD markers. 260 $c2002 520 $aThe objective of this study was to assess and cluster genetic variability in wheat germplasm in order to generate useful information for crop breeders. Fifty-four wheat genotypes from different origins and eras were evaluated based on the use of RAPD markers. Once genetic variability is detected among breeding materials, appropriate crosses can be done, sppeding up breeding processe and decreasing costs. Of 100 primers screened, 20 produced scorable bands, which generated 91 bands. The average genetic similatiry value among all genotype pairs was 0.88, showing large genetic relationships in the wheat germplasm evaluated. The dendogram clustered the genotypes into mine groups and showed efficiency in identifying genetic variability. 650 $agenetic similarity 650 $apolymorphism 650 $aTrigo 650 $aTriticum Aestivum 653 $aMolecular markers 653 $aVariabilidade genética 700 1 $aBARBOSA NETO, J. F. 700 1 $aROCHA, B. M. da 700 1 $aCARVALHO, F. I. F. de 773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 2, n. 4, p. 499-505, Dec. 2002.
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Embrapa Arroz e Feijão (CNPAF) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
06/07/1999 |
Data da última atualização: |
21/10/2022 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
WATRIN, O. dos S.; VENTURIERI, A.; SAMPAIO, S. M. N. |
Afiliação: |
ORLANDO DOS SANTOS WATRIN, CPATU; ADRIANO VENTURIERI, CPATU; SANDRA MARIA NEIVA SAMPAIO, CPATU. |
Título: |
Analise multitemporal do uso da terra e suas interrelações com a cobertura vegetal em comunidades rurais do nordeste paraense. |
Ano de publicação: |
1998 |
Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 9., 1998, Santos, SP. Anais. São Jose dos Campos: INPE, 1998. |
Páginas: |
p. 1573-1583. |
Idioma: |
Português |
Conteúdo: |
The Bragantina Micro Region located in the northeast of the State of Pará is one of the oldest areas of colonization in Amazonia, thus the natural landscape found today is quite modified. With the aim of evaluating the changes which have occurred over time in this environment and the role of primary and secondary vegetation in land use, two sample areas of 12 km x 16 km were selected. To characterize the vegetation and land use, TM/Landsat images for 1985 and 1995 were used, with the support of field surveys. It was observed that the modules under study, are predominantly covered by secondary vegetation in various stages of succession, sometimes representing up to 63% of the total area. The incorporation of new areas for uses such as pastures tends to concentrate mainly in areas in the early stages of secondary succession. Pressure on the classes with a forest typology were less intense, taking into account that the areas of pasture and agriculture showed a certain tendency to remain under the same form of land use. |
Palavras-Chave: |
Brasil; Dinâmica da paisagem; Landscape; Nordeste; Pará; Plant cover. |
Thesagro: |
Cobertura Vegetal; Cultivo Migratório; Uso da Terra. |
Thesaurus NAL: |
Amazonia; land use; shifting cultivation. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/94132/1/2-67o.pdf
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Marc: |
LEADER 01944nam a2200289 a 4500 001 1399853 005 2022-10-21 008 1998 bl uuuu u00u1 u #d 100 1 $aWATRIN, O. dos S. 245 $aAnalise multitemporal do uso da terra e suas interrelações com a cobertura vegetal em comunidades rurais do nordeste paraense.$h[electronic resource] 260 $aIn: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 9., 1998, Santos, SP. Anais. São Jose dos Campos: INPE$c1998 300 $ap. 1573-1583. 520 $aThe Bragantina Micro Region located in the northeast of the State of Pará is one of the oldest areas of colonization in Amazonia, thus the natural landscape found today is quite modified. With the aim of evaluating the changes which have occurred over time in this environment and the role of primary and secondary vegetation in land use, two sample areas of 12 km x 16 km were selected. To characterize the vegetation and land use, TM/Landsat images for 1985 and 1995 were used, with the support of field surveys. It was observed that the modules under study, are predominantly covered by secondary vegetation in various stages of succession, sometimes representing up to 63% of the total area. The incorporation of new areas for uses such as pastures tends to concentrate mainly in areas in the early stages of secondary succession. Pressure on the classes with a forest typology were less intense, taking into account that the areas of pasture and agriculture showed a certain tendency to remain under the same form of land use. 650 $aAmazonia 650 $aland use 650 $ashifting cultivation 650 $aCobertura Vegetal 650 $aCultivo Migratório 650 $aUso da Terra 653 $aBrasil 653 $aDinâmica da paisagem 653 $aLandscape 653 $aNordeste 653 $aPará 653 $aPlant cover 700 1 $aVENTURIERI, A. 700 1 $aSAMPAIO, S. M. N.
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